19 results about "Nanoring" patented technology

The invention provides a high-purity structural color device based on a metasurface and a color developing method, and relates to the technical field of structural color metasurface, the structural color device is a double-layer nanoring array based on an all-dielectric metasurface, adopts an optical design based on Fabry-Perot interference and Mie resonance, and comprises a plurality of structural units, the structure unit comprises a vertical stacking double-layer circular ring structure formed by a tantalum pentoxide Ta2O5 functional layer and a silicon dioxide SiO2 top cover layer, and has sub-wavelength periodic two-dimensional arrangement; through the technical path of the invention, a structural color solution with high purity, wide color gamut and high reflection is provided by utilizing the wide band gap characteristic and high-quality manufacturing capability of Ta2O5. The application scenarios include but are not limited to high-end displays, optical sensors, information encryption and precision optical elements, and brand new possibility is provided for development of the next generation of photonics technology.

The invention belongs to the technical field of superconducting material processing, and discloses a near-infrared optical response Nb3Sn superconducting wire and a preparation method thereof. The Nb3Sn superconducting wire with near-infrared optical response comprises an optical functional coating, the optical functional coating is formed by embedding periodically-arranged plasmon metal micro-nano structures into a high-transparency dielectric substrate, the plasmon metal micro-nano structures are gold nanorod arrays or silver nanoring, the dielectric substrate is made of a SiO2-polyimide composite material, and the thickness of the dielectric substrate is 10-20 micrometers. The Nb3Sn superconducting wire with the near-infrared optical response has high absorptivity and photoelectric response in the near-infrared band, in-situ optical sensing of temperature, stress and magnetic field intensity can be synchronously achieved, the interface compatibility of the optical functional coating and the Nb3Sn superconducting basic wire is good, meanwhile, the influence of the added optical functional coating on the performance of the superconducting wire is small, and the service life of the superconducting wire is prolonged. And the method has a wide application prospect in the aspect of constructing an integrated optical-electric-magnetic multifunctional device.

The application discloses a superconducting diode device based on a single-layer niobium nitride nanoring and a control method thereof, and belongs to the technical field of superconducting electronics. The superconducting diode device comprises an insulating substrate and a niobium nitride layer. The niobium nitride layer comprises a first working line, a second working line and an intermediate ring. The first working line comprises a first line segment, a second line segment and a first intermediate part. The second working line comprises a third line segment, a fourth line segment and a second intermediate part. The intermediate ring is connected with the first intermediate part and the second intermediate part. The application uses a single-layer niobium nitride film, and realizes a structure of a superconducting diode with a minimum size and a single layer by means of the action of a nanoring with geometric asymmetry and an external magnetic field. The device size is greatly reduced, which is conducive to high-density integration and miniaturization application, and conducive to realizing low-power consumption and high-speed rectification control. The difficulty of material and interface control is greatly reduced. The process flow is simple and has good repeatability, which is conducive to reducing the preparation cost and improving the consistency of the device.

The present invention discloses a method for preparing curved carbon nanobelts by removing HCl by Pd catalysis, wherein the structure of the curved carbon nanobelts is shown as follows: wherein R is hydrogen, C 1‑20 Alkyl, C 1‑20 Alkoxy, mesitylene, phenyl or its large π extension derivative, n is 1 or 3. The product prepared by the method of the present invention can be regarded as a sidewall fragment of a (m, m)-type carbon nanotube. The present invention uses a compound with a borate group and a compound with a halogen to undergo Suzuki-Miyaura cross-coupling reaction and reductive aromatization reaction to obtain a carbon nanocyclic compound, and then further undergoes a Suzuki-Miyaura cross-coupling reaction and Pd-catalyzed deHCl to obtain armchair-type carbon nanobelts of different sizes. The synthesis method of the present invention is unique, the structure is novel, it has good photophysical properties, and it has potential applications in bottom-up growth of single-walled carbon nanotubes.

The application discloses a kind of heterogeneous nanostructured materials and its controllable synthesis preparation method, belong to nanometer material technical field.This method with alkali metal rare earth fluoride nanorod seed, oleic acid and octadecene as growth system, by adding alkali metal rare earth fluoride precursor solution and the lattice mismatch degree between host-guest material is regulated, realize the accurate customization of heterogeneous nano material morphology.According to the quantitative regulation of mismatch degree: when longitudinal mismatch degree δ 纵 <2.0%, transverse mismatch degree δ 横 <1.0% when obtaining uniformly wrapped nanorod;When 2.0%≤δ 纵 <3.1%, 1.0%≤δ 横 <1.7% when obtaining nanoring wrapped nanorod;When 3.1%≤δ 纵 ≤5.1%, 1.7%≤δ 横 ≤2.3% when obtaining nanorod wrapped by nanoscale island.The application realizes the quantitative regulation of heteroepitaxial growth mode by lattice mismatch engineering, provides a new idea for the design of multifunctional integrated heterogeneous nano material.

The invention discloses a high-entropy nano environmental catalytic material as well as a preparation method and application thereof, the catalytic material is prepared by taking SiO2 as a substrate and a Fe2O3-Co3O4-NiO-CuO-ZnO composite oxide as a component and adopting a combined method of magnetron sputtering coupling solvothermal, ultrasonic-assisted electrochemical deposition, microwave hydrothermal in-situ self-assembly and plasma-assisted ozonation. The catalytic material is environment-friendly, rich in active interface and high in specific surface area, can efficiently catalyze and degrade organic pollutants such as chlorobenzene at low temperature, and has a wide market application prospect.

The application belongs to the field of optics and nanomaterial self-assembly, and provides a material with structural color and a preparation method and application thereof. A polymer nanoring is used as an assembly unit, an easily volatile organic solvent is used as a dispersion medium, and a water vapor interface is used as an assembly interface. A self-assembly process induced by an interface surface tension gradient is used to make the nanoring array directionally arrange on the water surface. The nanoring has an outer diameter of 500-1000 nm and a thickness of 100-400 nm. Subsequently, LB film analyzer technology is used to controllably transfer the closely arranged nanoring array to a transparent substrate under suitable film forming pressure, film forming speed, film pulling speed and film pulling pressure to obtain a material with structural color. The structural color material prepared by the application has obvious structural color and angle correlation, and the structural color can be regulated by the size of the assembly unit, and is suitable for use in the fields of display, anti-counterfeiting, encryption and the like.

Disclosed are a protective coating layer, and a preparation method and use thereof. The present application provides a protective coating layer, including: a rusty-surface liquid layer, a nano-zinc yellow epoxy primer layer, a nano-epoxy micaceous iron oxide (MIO) intermediate coating layer, and a nano-fluorocarbon top coating layer, where the rusty-surface liquid layer is applied on a metal substrate; the nano-zinc yellow epoxy primer layer is applied on a surface of the rusty-surface liquid layer; the nano-epoxy MIO intermediate coating layer is applied on a surface of the nano-zinc yellow epoxy primer layer; and the nano-fluorocarbon top coating layer is applied on a surface of the nano-epoxy MIO intermediate coating layer. The present application effectively solves the technical problem that the existing protective coating layer with nanoparticles exhibits poor adhesion to a substrate and cannot provide a protective effect for a long time.

The application relates to the technical field of photocatalysis and heavy metal treatment, and particularly discloses a method for photocatalytic reduction of hexavalent chromium, which comprises the following steps: mixing a photocatalyst with a hexavalent chromium solution, adjusting the pH value to 1-7, stirring, and irradiating; wherein the photocatalyst is a bismuth molybdate nanoring; the method uses the novel bismuth molybdate nanoring as the photocatalyst to efficiently reduce the hexavalent chromium for the first time, the reaction rate is fast, the photocatalyst can be recycled, the method is green and environment-friendly, and the cost is low.

The invention discloses a superconducting diode device based on a single-layer niobium nitride nanoring and a control method thereof, and belongs to the technical field of superconducting electronics, the superconducting diode device comprises an insulating substrate and a niobium nitride layer, the niobium nitride layer comprises a first working line, a second working line and an intermediate ring, the first working line comprises a first line segment, a second line segment and a first middle part, the second working line comprises a third line segment, a fourth line segment and a second middle part, and the middle ring is connected with the first middle part and the second middle part. According to the invention, the single-layer niobium nitride thin film is used, and by virtue of the effects of the geometrically asymmetric nano circular ring and an external magnetic field, a superconductive diode structure with an extremely small structure and a single layer is realized, so that the size of the device is greatly reduced, high-density integration and miniaturization application are facilitated, and low-power-consumption and high-speed rectification control is facilitated to be realized; the difficulty of material and interface control is greatly reduced; the process flow is simple, the repeatability is good, the preparation cost is reduced, and the device consistency is improved.

The invention relates to the technical field of photovoltaic materials, in particular to a preparation method of a high-efficiency stretchable organic solar cell, which is characterized in that a conjugated carbon annular nanoring is introduced into an active layer of a device as a solid additive, and the addition amount of the conjugated carbon annular nanoring is 2-5% of the total mass of electron donor and acceptor materials. A conjugated carbon annular nanoring, an electron donor, an electron acceptor material and an organic solvent are uniformly mixed to prepare an active layer, and then a hole transport layer, an electron transport layer and a metal electrode are prepared in sequence to form the organic solar cell with a bulk heterojunction structure. The conjugated carbon annular nanoring has a specific structure, so that the tensile property of the active layer can be remarkably improved, the elastic modulus is reduced, and meanwhile, the photoelectric conversion efficiency is maintained or improved. The method is simple in process, is suitable for flexible / stretchable organic photovoltaic devices, and provides an effective way for preparing organic solar cells with high efficiency and excellent mechanical characteristics.

Electrode for a polymer electrolyte membrane fuel cell, the electrode containing: 100 parts by weight of a carbon-supported catalyst; 20 to 80 parts by weight of a hydrogen ion-conductive polymer electrolyte binder material, based on 100 parts by weight of the carbon-supported catalyst; 1 to 60 parts by weight of carbon nanofibers, based on 100 parts by weight of the carbon-supported catalyst; and 1 to 20 parts by weight of a radical inhibitor, based on 100 parts by weight of the carbon-supported catalyst, wherein the carbon nanofibers are added to a layer of the carbon-supported catalyst, wherein the carbon nanofibers contain at least one selected from the group consisting of carbon nanotubes, carbon nanowires, carbon nanohorns, and carbon nanorings having a diameter of 5 to 100 nm and a length of more than several hundred nanometers.

The invention discloses a method for efficiently synthesizing a D2 symmetric chiral conjugated carbon nanoring, which comprises the following steps: by taking planar chiral cyclophane diamine as a starting point, obtaining an intermediate D2-(P)-PtNR3 at the yield of 86% through pre-bending a fused ring unit and platinum-mediated cyclization, removing Pt, and then obtaining a target chiral conjugated nanoring molecule D2-(P)-NR3 at the high yield of 75%. And meanwhile, the enantiomer D2-(M)-NR3 is obtained with high yield by the same synthesis method. The synthesis method solves the problems of low yield, difficult chiral control, tedious separation and purification and the like in the traditional macrocyclic synthesis.

The preparation method of the carbon nanoring is prepared by using glucose, ferrocene, deionized water and hydrogen as raw materials, respectively preparing glucose ferrocene solution, hydrogenation reaction, washing and drying, ball milling, washing and purifying and drying steps; wherein the mass ratio of glucose, ferrocene and deionized water is 50:1:500. The product prepared by the application overcomes the problem that the current carbon nanotube increases the contact resistance of the device due to agglomeration, thereby reducing the photoelectric efficiency of the device. The product is used as an electron transport layer of an inverted perovskite solar cell, which significantly improves the photoelectric performance of the device. The carbon nanoring modified device has obvious improvement in photovoltaic performance, the open circuit voltage is 1.04V, the EQE of the carbon nanoring modified device is obviously increased in the range of 550-750nm, and the integral current of the device reaches 22.02mA / cm 2 , which is obviously higher than 19.09mA / cm 2 of the comparative device.

The application discloses an absorber and a preparation method thereof. The absorber comprises a substrate layer, a metal film layer arranged on the substrate layer, nanowires arranged on the metal film layer, and at least one disc layer arranged on the metal film layer and around the circumference of the nanowires. The disc layer comprises metal nanorings and dielectric nanorings, and the metal nanorings and the dielectric nanorings are alternately and sequentially stacked. The absorber of the application can significantly reduce the manufacturing difficulty, has a simpler structure, increases the absorption bandwidth, and improves the light absorption performance by arranging the nanowires on the metal film layer and arranging the disc layer outside the nanowires and using the nanowires to provide a support structure. Furthermore, the deposition of the disc layer with the metal nanorings and the dielectric nanorings alternately and sequentially stacked can change the wave band of the absorption peak, realize the adjustability of a periodic unit, and improve the overall performance of the absorber.

This invention provides a method for preparing an array-type silver nanoring SERS-enhanced substrate, comprising a self-assembly step of a polystyrene microsphere monolayer template; a step of preparing a silicon nanocone array using reactive ion etching; a step of removing residual template by high-temperature annealing; and a step of depositing a silver layer by magnetron sputtering. This invention also provides a method for serum metabolic fingerprint analysis using the above-mentioned array-type silver nanoring SERS-enhanced substrate. Furthermore, this invention provides the application of the above-mentioned method for serum metabolic fingerprint analysis using the array-type silver nanoring SERS-enhanced substrate in the construction of disease diagnostic models. The method provided by this invention has the advantages of simple operation, rapid detection, low sample requirement, high sensitivity, and high repeatability, and can be used for early screening, disease activity monitoring, and auxiliary diagnosis of autoimmune diseases.

The invention belongs to the technical field of electromagnetic wave absorber composite materials, and relates to a Fe3O4 / MXene composite material and a preparation method and application thereof.The preparation method comprises the steps that a Fe2O3 nanoring is prepared firstly, then the nanoring and MXene are added into deionized water to be stirred, and the Fe2O3 nanoring is attached to MXene through a hydrothermal method. And finally, carrying out high-temperature annealing on the Fe2O3 nanoring / MXene, so as to prepare the Fe3O4 nanoring / MXene composite material. According to the preparation method, a hydrothermal method and a high-temperature annealing method are adopted, and the Fe3O4 nanoring / MXene composite material is prepared by taking Fe2O3 nanoring / MXene as a precursor. According to the special ring / sheet structure, the Snoek limit can be broken through due to the nanoring with the special vortex magnetic structure, and meanwhile the dielectric loss is improved through the introduced two-dimensional dielectric material. A microwave absorption performance result shows the practical application possibility of the sample.

This invention provides a multi-turn silver nanoring and its preparation method, belonging to the field of metal nanomaterial preparation technology. The invention first mixes a polyvinylpyrrolidone (PVP) glycol solution with pyridine to obtain a mixed solution; then, the mixed solution, a sodium halide glycol solution, silver nitrate, and sodium nitrate are mixed, followed by a solvothermal reaction and precipitation separation to obtain multi-turn silver nanorings. The method for preparing multi-turn silver nanorings is simple, easy to implement, has good reproducibility, and high yield. During the preparation process, the addition of the organic solvent pyridine enables the silver nanowires to bend and grow significantly to form multi-turn silver nanorings.